在污染物痕量分析中,已认识到检测极限的重要性。通常,还有一个指标是选择性。为此,必须要用色谱分离,从而使检测程度主要取决于色谱的参数,特别是进样这一步。在从前的工作中,观察到当样品注入市售反相物质(C_8—C_(18))中时,溶介在极性溶 In pollutant trace analysis, the importance of detecting limits has been recognized. Often, there is another indicator that is selective. To this end, it is necessary to use chromatographic separation, so that the degree of detection depends mainly on the chromatographic parameters, especially the injection step. In the past work, it was observed that when the sample was injected into a commercially available reversed phase material (C_8-C_ (18)), the dissolution medium was dissolved in a polar solvent